1. Write and run a C++ program to test the following function that returns the sum of the floats pointed to by the first n pointers in the array p. float sum (float* p[], int n); 2. Write and run a C++ program that use pointers to swap four integer values. 3. Modify the program of Example 05 so that, it takes and prints values using the following two functions respectively. void get (double *&a, int& n); void print (double *a, int n); 4. Following is a function for the (indirect) Bubble Sort. Here, on each iteration of the inner loop, if the floats of adjacent pointers are out of order, then the pointers are swapped. void sort (float * p[], int n) { float * temp: for (int i = 1; i < n; i++) for (int j = 0; j